纳米SiC颗粒增强AM60镁合金组织性能的研究  

Microstructure and Mechanical Properties of SiC Nanoparticle Reinforced AM60 Magnesium Alloys

作　　者：王朝辉[1] 康永林[1] 赵鸿金[1] 徐跃[1] 董文超[1] 刘津伟[1] 

机构地区：[1]北京科技大学 北京科技大学 北京科技大学 北京科技大学 北京科技大学 北京科技大学

出　　处：《特种铸造及有色合金》2005年第z1期52-53,共2页Special Casting & Nonferrous Alloys

基　　金：国家863项目(2002AA336080),国家重点基础研究发展规划(973)项目(G2000067302)

摘　　要：通过对纳米SiC颗粒的预处理,使用搅熔复合铸造工艺,制备了纳米SiC颗粒增强AM60铸造镁合金材料.对纳米SiC颗粒对镁合金的显微组织、力学性能和硬度等的影响进行了研究.研究结果表明:在镁合金中添加纳米SiC颗粒能够细化其组织,提高材料的综合力学性能.同时,对纳米SiC颗粒对镁合金的强化机理进行初步的探讨.Pretreated nano-SiC particle reinforced AM60 magnesium alloy was fabricated by stirring-smelting casting. Effects of nano-SiC particle on the microstructure, mechanical properties and hardness of the Mg alloy were researched. The results show that nano-SiC particle can refine the microstructure and improve the comprehensive mechanical properties of the AM60 magnesium alloy. The tensile strength,elongation and hardness of the nano-particle reinforced AM60 Mg alloy with 1%nano-SiC particle addition is 240 MPa,16% and 53.9,increased by 12.1%,40.3% and 11.6% respectively compared with that of the AM60 Mg alloy without nano-SiC particle with the same method.Meanwhile, the strengthening mechanism of nano-particle SiC on the AM60 magnesium alloy was approached.

关 键 词：镁合金 AM60 纳米SIC颗粒 显微组织 力学性能 

分 类 号：TG146.2+2[一般工业技术—材料科学与工程] TG113.25[金属学及工艺—金属材料]